Weller Rolf rolf.weller@awi.de 0000-0003-4880-5572 Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven AWI https://www.awi.de/ https://ror.org/032e6b942 2024 Aerosol light absorption coefficients and black carbon concentrations at Neumayer for the year 2023 dataset Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven https://doi.org/10.1594/PANGAEA.965468 2024-02-09T08:16:25 https://doi.org/10.1594/PANGAEA.987702 We operate a multi angle absorption photometer MAAP (Model 5012, Thermo Electron Corp.). which is in operation since March 2006 ongoing. This instrument measures atmospheric light absorption by aerosol (mainly caused by black carbon, BC). To this end, ambient aerosol was sampled on a glass filter tape. The measured absorption coefficients abs(637) refer to a wavelength of 637 nm. Raw data were originally sampled in one-minute resolution. Finally, hourly averaged MAAP data are presented here. We also provide BC concentrations (ng/m³) derived from the absorption coefficients using the specific BC attenuation cross section (QBC) of 6.6 m²/g. Weller Rolf rolf.weller@awi.de 0000-0003-4880-5572 2021 Aerosol light absorption coefficients and black carbon concentrations at Neumayer (2006-2020) dataset Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven https://doi.org/10.1594/PANGAEA.938991 Weller Rolf rolf.weller@awi.de 0000-0003-4880-5572 2023 Aerosol light absorption coefficients and black carbon concentrations at Neumayer for the year 2021 dataset Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven https://doi.org/10.1594/PANGAEA.956089 Weller Rolf rolf.weller@awi.de 0000-0003-4880-5572 2023 Aerosol light absorption coefficients and black carbon concentrations at Neumayer for the year 2022 dataset Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven https://doi.org/10.1594/PANGAEA.956056 -8.25 -8.25 -70.65 -70.65 -8.25 -70.65 2023-01-01T00:00:00 2024-01-01T00:00:00 5.0 5.0 time series AWI_AC Atmospheric Chemistry @ AWI https://www.awi.de/en/science/long-term-observations/atmosphere/antarctic-neumayer/air-chemistry.html Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven AWI https://www.awi.de/ https://ror.org/032e6b942 Neumayer_SPUSO http://www.awi.de/en/infrastructure/stations/neumayer_station/observatories/air_chemistry_observatory/technical_aspects/ -70.65 -8.25 Dronning Maud Land, Antarctica 42.0 1983-01-01T00:00:00 Neumayer_based Neumayer_based NEUMAYER III https://doi.org/10.17815/jlsrf-2-152 NEUMAYER III https://doi.org/10.17815/jlsrf-2-152 Air chemistry observatory SPUSO atmospheric gas analysers http://vocab.nerc.ac.uk/collection/L05/current/382/ Chemical property sensors https://hdl.handle.net/10013/sensor.65dbeefe-918e-4a91-8c23-9f36c41a4c3e 26274 CC-BY-4.0 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ Important notice: BC concentrations are extremely low at Neumayer, typically lower than the instrumental noise level referring to 1 hour averages (between 0.04 and 0.05 Mm-1). Notwithstanding, we archived hourly averages, but one has to be aware that negative values may not be removed when smoothing the data or when calculating averages with lower temporal resolution, otherwise the results would exhibit a substantial positive bias! HEIGHT above ground Height m http://en.wikipedia.org/wiki/Height height http://purl.obolibrary.org/obo/PATO_0000119 Length L http://dbpedia.org/resource/Length Weller Rolf rolf.weller@awi.de 0000-0003-4880-5572 Height [m] DATE/TIME Date/Time http://en.wikipedia.org/wiki/ISO_8601 Time T http://dbpedia.org/resource/Time start Date/Time (start) DATE/TIME Date/Time http://en.wikipedia.org/wiki/ISO_8601 Time T http://dbpedia.org/resource/Time end Date/Time (end) Duration Duration h duration http://purl.obolibrary.org/obo/PATO_0001309 Time T http://dbpedia.org/resource/Time Weller Rolf rolf.weller@awi.de 0000-0003-4880-5572 Duration [h] Aerosol absorption at 637 nm abs(637) 1/Mm Multi angle absorption spectrometer MAAP5012 Weller Rolf rolf.weller@awi.de 0000-0003-4880-5572 abs(637) [1/Mm] Black carbon, aerosol Aerosol BC ng/m**3 black carbon https://en.wikipedia.org/wiki/Black_carbon Density http://dbpedia.org/resource/Density Multi angle absorption spectrometer MAAP5012 Weller Rolf rolf.weller@awi.de 0000-0003-4880-5572 Aerosol BC [ng/m**3] CurationLevelC Enhanced curation https://wiki.pangaea.de/wiki/Curation_levels citable aerosol AIRCHEM Atmospheric chemistry Spuso author10208 basis5304 campaign25457 campaign3394411 curlevel30 event2245980 geocode1599 geocode1600 geocode1601 geocode56349 geocode8128 inst32 license21 method10711 method14011 param122806 param46445 param507212 pi10208 project4041 refds938991 refds956056 refds956089 sourceinst32 term1073288 term1080072 term21330 term2299429 term318 term40462 term43792 term43863 term43975 term47838 term47840 term49484 term67625 topotype8